Q.1
Spot welding is used for welding
  • Lap joints in plates having 0.025 mm to 1.25 mm thickness
  • Lap joints in plates having thickness above 3 mm
  • Butt joints in plates having 0.025 mm to 1.25 mm thickness
  • Butt joints in plates having thickness above 3 mm
Q.2
A ring gauge is used to
  • Check the diameter of shafts or studs
  • Test the accuracy of holes
  • Check the clearance between two mating surfaces
  • All of the above
Q.3
Blanking and piercing operations can be performed simultaneously in a
  • simple die
  • progressive die
  • compound die
  • combination die
Q.4
A saw which cuts wood during the return stroke of the saw is known as
  • push saw
  • pull saw or draw saw
Q.5
Which of the following material can be used for making patterns?
  • Aluminium
  • Wax
  • Lead
  • All of these
Q.6
Galvanising is a
  • zinc diffusion process
  • process of coating zinc by hot dipping
  • process used for making thin phosphate coating on steel
  • none of the above
Q.7
The recrystallisation temperature of steel is
  • 400°C
  • 600°C
  • 800°C
  • None of these
Q.8
Lancing is the operation of
  • Cutting a sheet of metal in a straight line along the length
  • Removal of metal to the desired shape from the edge of a plate
  • Cutting a sheet of metal through part of its length and then bending the cut portion
  • Bending a sheet of metal along a curved axis
Q.9
A jolt machine is used to
  • Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
  • Ram the sand harder at the back of the mould and softer on the pattern face
  • Produce uniform sand hardness throughout the mould
  • Produce uniform packing of sand in the mould
Q.10
The type of file used for a wood work is
  • single-cut file
  • double cut file
  • rasp-cut file
  • any one of these
Q.11
In sheet metal work, he cutting force on the tool can be reduced by
  • Grinding the cutting edges sharp
  • Increasing the hardness of tool
  • Providing shear on tool
  • Increasing the hardness of die
Q.12
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is
  • Less than 0.1 percent
  • Less than 0.3 percent
  • More than 0.3 percent
  • Anywhere between 0.1 to 1 percent
Q.13
The tolerance produced by shell moulding process of casting is
  • +0.05 mm
  • ±0.2 mm
  • +0.5 mm
  • ±1 mm
Q.14
The diaphragm moulding machine is used to
  • Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
  • Ram the sand harder at the back of the mould and softer on the pattern face
  • Produce uniform packing of sand in the mould
  • Give uniform sand hardness throughout the mould
Q.15
A pattern maker's shrinkage rule considers
  • all pattern allowances
  • only shrinkage allowance
  • all materials to be cast
  • all materials of the pattern
Q.16
The algebraic difference between the minimum limit and the basic size is called
  • actual deviation
  • upper deviation
  • lower deviation
  • fundamental deviation
Q.17
In welding copper alloys with TIG arc welding
  • direct current with straight polarity is used
  • direct current with reversed polarity is used
  • alternating current is used
  • any one of these
Q.18

A file with-teeth inmm is called bastard file.

  • True
  • False
Q.19

A file withteeth inmm is called

  • rough file
  • bastard file
  • second cut file
  • smooth file
Q.20

For obtaining a cup of diametermm and heightmm by drawing, the size of the round blank should be approximately

  • 42 mm
  • 44 mm
  • 46 mm
  • 48 mm
0 h : 0 m : 1 s